618163968 has 36 divisors (see below), whose sum is σ = 1645219688. Its totient is φ = 206054400.

The previous prime is 618163937. The next prime is 618163969. The reversal of 618163968 is 869361816.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618163969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401683 + ... + 403218.

Almost surely, 2^618163968 is an apocalyptic number.

It is an amenable number.

618163968 is an abundant number, since it is smaller than the sum of its proper divisors (1027055720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618163968 is an equidigital number, since it uses as much as digits as its factorization.

618163968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804920 (or 804906 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 618163968 is about 24862.9034507235. The cubic root of 618163968 is about 851.8593521276.

The spelling of 618163968 in words is "six hundred eighteen million, one hundred sixty-three thousand, nine hundred sixty-eight".